Alien planets are far away but extreme lasers on Earth are giving scientists a way to investigate what they're like.

Lasers aren't just useful for entertaining cats or pointing out features of PowerPoint slides. They can also drill holes on icy extraterrestrial bodies from comets to Mars polar caps—at least, ...

This voice experience is generated by AI. Learn more. This voice experience is generated by AI. Learn more. The Milky Way galaxy has more than 400 billion stars in it. Over the last few decades, ...